13921170 has 32 divisors (see below), whose sum is σ = 34490880. Its totient is φ = 3592320.

The previous prime is 13921163. The next prime is 13921211. The reversal of 13921170 is 7112931.

13921170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13921170.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6555 + ... + 8414.

It is an arithmetic number, because the mean of its divisors is an integer number (1077840).

Almost surely, 2^13921170 is an apocalyptic number.

13921170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13921170 is an abundant number, since it is smaller than the sum of its proper divisors (20569710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13921170 is a wasteful number, since it uses less digits than its factorization.

13921170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15010.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 13921170 is about 3731.1084143991. The cubic root of 13921170 is about 240.5610139643.

The spelling of 13921170 in words is "thirteen million, nine hundred twenty-one thousand, one hundred seventy".